To find the age of other home components, go to How can I find out the age of a roof? and How do I determine the age of an electrical panel? and How do I determine the age of my air conditioner? For life expectancies, visit What is the average life expectancy of the components of a house? Jackson Manufacturing went bankrupt in 1983, so any Jackson water heater you come across that is still installed will be quite old. So the example below was manufactured in 1979 However, some units encoded the month and year in the last 4 digits of the serial number, with the last two digits being the year. To determine the age of another manufacturer/brand of water heater, go to How do I determine the age of my water heater? The data plate pictured below indicates that the water heater was manufactured in April, 1978, for example. The date appears at the address line at top of the data plate. Jackson water heaters we have come across do not encode the date of manufacture in the serial number.
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